Huizhou Pengchengrui Technology Co., Ltd.

The current core standards for nickel titanium memory sheets are GB/T 39985-2021 (national standard, universal), GB/T 24627-2023 (national standard, medical implant), YS/T 1076-2015 (industry standard, universal), and internationally commonly used ASTM F2063.

1、 Core standard system

（1） General industrial board: GB/T 39985-2021 (implemented on December 1, 2021)

Applicable: industrial/general medical plates such as eyeglass frames, orthopedic implants, springs, etc.

Composition (mass fraction): Ni 54.5%~57.0%, residual Ti; Impurities: C ≤ 0.07%, H<0.005%, O+N<0.4%.

Brand:

TiNi-01: Binary NiTi, Memory/Superelasticity

TiNi-02：NiTi-Cr（0.2%~0.6%）

TiNi-03：NiTi-V（0.4%~0.8%）

Specification (mm):

Thickness: 0.3~60 (Cold rolling 0.3~4; Hot rolling>4~60)

Width: 100~500; Length: 300~1000

Mechanical properties (after heat treatment: ≥ 800 ℃ insulation for ≥ 15 minutes, rapid cooling):

Tensile strength: ≥ 551MPa

Elongation rate: ≥ 15% (≤ 50mm); ≥10%（>50~60mm）

Key tolerances (allowable thickness deviation, mm):

• 0.3~0.5：±0.05

• >0.5~0.8：±0.07

• >0.8~1.1：±0.09

• >1.1~1.5：±0.11

• >1.5~2.0：±0.15

（2）Medical implant board: GB/T 24627-2023 (implemented on January 1, 2025, replacing GB 24627-2009)

Applicable: Surgical implants (such as stents, bone plates), rolled materials with a thickness of 5.5-94mm; Other medical devices can be referred to.

Composition: Ni 54.5%~57.0% (same as GB/T 39985), but with strict control of impurities and surface cleanliness.

Core differences: stricter requirements for biocompatibility, surface quality, and non-destructive testing, equivalent to using ASTM F2063-18.

（3） Industry basic standards

YS/T 1064-2015 "Terminology for Nickel Titanium Shape Memory Alloys": defines core terms such as phase transition temperature, superelasticity, and memory effect.

ASTM F2063-18: International General Standard for Medical Grade NiTi Processing Materials, often benchmarked for domestic medical products.

2、 Key Technical Requirements (Abstract of GB/T 39985-2021)

（1）Supply status

Hot working state (R), cold working state (Y), annealed state (M)

Characteristics: Memory (SM), Super Elasticity (SE)

（2）Appearance quality

Surface: alkali pickling/sandblasting/bright; No cracks, peeling, oxidation, or folding

Allow slight scratches, indentations (within thickness tolerance), and no delamination

（3）Organization and Grain Size

Low magnification: no cracks, pores, inclusions, segregation

Grain size: not coarser than grade 4 (GB/T 6394)

（4）Phase transition temperature

According to the buyer's agreement, test according to YS/T 970 or YY/T 0641

3、 Selection suggestions

General industrial/non implantable medical: GB/T 39985-2021

Surgical implantation/high-risk medical treatment: GB/T 24627-2023 (benchmarked against ASTM F2063)

Contract must specify: brand, status, specifications, characteristics, phase transition temperature, and execution standards.

Pengchengrui Technology offers nickel titanium alloy plates in 4mm/6mm/8mm specifications. With mature deep processing and forming technology, we can create high-precision and high elasticity nickel titanium alloy products according to your drawings and process requirements.